Damn. With all these comments now I am questioning if they will work. Maybe give them a try just as a test? They are not too expensive.

They do sound too good to be true. Not screwed on, not even modern glued on, nor braised on. Just some screws and tension ... guess the guys saying they work well are either connected to the business or the websites, or never shoot much OR just to be positive, maybe the bases "fit" better on some actions than others?

I may still give them a try. If they don't work, gives me something to complain and moan about for the next ten years ,,, something new at least .....